Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2544f234fe7f19ee44c7d028cda0eaa2c50115e5b95258bbdc379dc971d12f85' 
  AND token = 'EuERkyDi0jCF9mM3psUri+Hc30VgvFchZrMfOOuQPw0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}